Magnetic crane



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W. H..MORGAN.- MAGNETIC GRANB.

No. 496,432.- Patented May 12,, 1893,

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W. 'HLMORGAN.

MAGNETIC ORANB. I No. 496,432. Patented May 2,1893.

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w. H. MORGAN. MAGNETIC GRANE.

No. 496,432. I Patented May 2, 189a.

WILLIAM HENRY MORGAN, OF ALLIANCE, OHIO.

MAGN ETIC CRAN E.

SPECIFICATION forming part of Letters Patent No. 496,432, dated May 2,1893.

Application filed June 9, 1892. Serial No. 436,126. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM HENRY MOR- GAN, of Alliance, in the countyof Stark and State of Ohio, have invented certain new and usefulImprovements in Magnetic Cranes; and Ido hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

My invention relates to an improvement in magnetic cranes, the objectbeing to provide a traveling crane with an electro-magnet carried by achain mounted on a drum, the said magnet designed for handling ingots,plates and other metallic bodies.

My invention consists in a traveling bridge having a drum thereon, achain carried by said drum, a magnet suspended from the chain, anddevices carried by the bridge for moving the latter lengthwise the shopand for actuating and stopping the drums.

My invention further consists in the parts and combinations of parts aswill be more fully described and pointed out in the claims.

In the accompanying drawings, Figure lis a view in side elevation of atraveling crane embodying myinvention, and Fig. 2 is aplan View of same,and Figs. 3 and 4 are views showing the conductors leading to themagnets.

A represents rails located the required distance apart, the two rails orlines of rails constituting an overhead track on which the bridgeBmoves. This bridge is mounted or secured at its ends on trucks 0, eachof which is provided with flanged track wheels a which latter rest onthe rails A, and prevent lateral displacement of the trucks OJ Onewheela of each truck 0 is provided with a toothed wheel 6 fixed thereto,and motion is imparted to these wheels so as to cause the crane to moveby means of the electric motor D, through the gearing now to bedescribed.

Secured to the armature shaft of the motor is the small wheel 1 meshingwith the larger wheel 2 the latter carrying the toothed wheel 3 whichlatter meshes with wheel 4, fast on shaft E. This shaft runs lengthwisethe bridge and is provided on its opposite ends with toothed wheels 5meshing with the wheels 6, which latter as before stated are fast to thetrack wheels a. From the motor D and the train of wheels just describedmotion is imparted to the bridge simultaneously at both ends and byreversing the direction of the current through the motor the directionof travel of the bridge can be changed.

Ordinarily traveling bridges or cranes, are

provided with trolleys adapted to move length- 'wiseof the bridge, thesaid trolley carrying motor G, which I term the hoist motor,is carriedby the bridge and one truck and is provided on its armature shaft with asmall toothed wheel 7 meshing with the toothed wheel 8. This wheel 8carries the smaller wheel 9 which in turn meshes with wheel 10 keyed toshaftF. The shaft F is supported at intervals throughout it length bybearings d, and in the presence instance carries-five drums H, each ofwhich is provided with two clutches I I, one of which, I, is designed tohold the drum against movement, while the other is designed for lockingthe drum to the shaft. Each clutch I for locking the drum to the shaftconsists of two parts dand 2",. the part 2" being fast to shaft F andtheparti fast to the drum so that when the two parts of the clutch (theconstruction of which is immaterial so far as the invention involved inthis application is concerned) are locked together, the drum, or drumsare caused to revolve with the shaft and in the direction of rotation ofthe shaft. The other clutch I of each pair also consists of two parts 2'and t the former of which is rigidly secured at its base to the top ofthe bridge, while the latter part 1? like the part i of the clutch I iskeyed to the drum H so as to revolve therewith.

From the foregoing it will be seen that when the parts 11 and i of theclutch I are disengaged, and the parts i, t" of the clutch 1 lockedtogether, the drum or drums as the case may be will revolve with shaftF. It is essential however to provide means for actuating the twoclutches of one drum simulta neously, so as to lock the two sections ofone clutch at the same time the two sections of the other clutch aredisengaged. This is accomplished by levers and devices connected to theactuating handles J located with the operators cage K depending from thebridge at one end thereof. A handle J is provided for each drum, and arepreferably located side by side and close together so as to be withineasy reach of the operator. Each handle is in the form of a bell cranklever the short end of which is connected to a pitman J.

For convenience I will describe the devices for actuating the drumclutches immediately over the cage K, and as the general features in allare alike a description of one will suffice for all. The pitman Jextends upwardly and is connected to the crank n on shaft a mounted insupports 77?. This shaft is provided with a yoke engaging a groove incone or and hence when the shaft n is rocked the cone is moved toward oraway from the clutch as the case may be. The shaft n is also providedwith a depending arm n to which is secured the rod at. The opposite endof this rod is connected to the lower end of arm a secured to the shaft01 the latter being mounted in bearings n. This shaft 01 is providedwith a yoke 01 which engages cone or. By this arrangement it will beseen that when shaft n is rocked and the cone n moved in one directionthe shaft 77. and cone n are moved in the opposite direction,thuslocking one clutch and releasing the other. With the second andthird drums from the cage side of the crane, the rods a are in a planeover the drums, while with the fourth and fifth drums the arrangement isabout the same as the arrangement above described. With this arrangementany or all the drums can be retated and by reversing the motor thedirection of rotation of the shaftis changed.

Each drum carries a chain to the lower end of each of which is suspendedan electro magnet. These magnets all have smooth flat lower faces so asto adapt them to rest solidly on a plate, ingot or other body or bodiesof metal to be lifted, and are supplied with current of electricity bythe wires L wound on drums H and connected at their ends to the metalcollars h. The drum is preferably made of wood and the wires L leadingfrom the dynamo are connected electrically by brush or other contact tothe collars k the two collars on each drum 11 being insulated from eachother, so that the current must of necessity pass through the coilssurrounding the magnet before it returns to the dynamo. The drums 11 areeach provided with a wheel H made of vulcanized fiber or otherinsulating material, or if of metal, it must be insulated from thecollar or bearing h to which it is secured. This wheel H meshes with asmall pinion H which in turn engages gear wheel H fast to the drum H.Thus it will be seen that when drum II is revolving drum II will revolvetherewith and wind up or unwind as the case may be the wires L leadingto the magnet. These magnets can be used for lifting long heavy plates,and are more desirable for this purpose than the sling ordinarily used,as they do not bend or otherwise distort the plates, and one or more ofthe magnets can be used for shorter plates, ingots and like articles.

It is evident that numerous slight changes and alterations might beresorted to in the relative arrangement of parts herein describedwithout departing from the spirit and scope of my invention hence Iwould have it understood that I do not wish to limit myself to the exactconstruction of parts herein described, but,

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In an overhead traveling crane, the combination with a travelingbridge, a series of drums thereon, and means whereby said drums can berotated independently or in unison, of a magnet suspended from eachdrum, substantially as set forth.

2. In a crane the combination with a driving shaft a series of drumsloosely mounted on said shaft, clutches for locking the drums to theshaft, and clutches for locking the drums against rotation, of a magnetsuspended from each drum, substantially as set forth.

3. In a crane, the combination with a shaft, a series of drums loosethereon, clutches arranged in pairs one pair for each drum, one clutchof each pair adapted to look its drum against rotation and the otheradapted to lock its drum to the shaft and means for coupling theclutches of each pair whereby they are moved in unison, of a magnetsuspended from each drum.

4. In an overhead traveling crane, the com bination with a travelingbridge, a motor and gearing for moving same, a driving shaft mounted 011the bridge and motor and gearing for actuating the shaft, of aseries ofdrums loosely mounted on said shaft, means for looking said drumsagainst rotation and means for locking them to the shaft substantiallyas set forth.

5. In an overhead traveling crane, the com bination with a travelingbridge and motor and gearing for actuating same, ashaft mounted on saidbridge and motor and gearing for actuatingsaid shaft,of drumslooselymounted on the shaft and clutches and levers and rods asdescribed for actuating the clutches whereby all of the drums can berotated simultaneously, or one or more of them locked against rotationwhile the others are rotating, substantially as set forth.

6. In an overhead traveling crane, the com- In testimony whereof I havesigned this bination, with a traveling bridge, a driving specificationin the presence of two subscribshaft arranged lengthwise said bridge, aseing witnesses.

ries of drums actuated by said shaft and WILLIAM HENRY MORGAN. 5 meansfor controlling the rotation of said Witnesses:

drums, of a magnet suspendedfor each drum 7 A I F. E. DUSSEL,

substantially as set forth. H. W.'HARRIS. V

